Product # DQ65033QKA04

Phone 1-888-567-9596

Doc.# 005-2DQ653L Rev. B

11/11/04

Page 5

T

pecification

Input:

Input:

Outputs:

Outputs:

Current:

Current:

P

ackage:

35-75V

35-75V

5.0V & 3.3V

5.0V & 3.3V

40W

40W

Quarter-brick

Quarter-brick

60

65

70

75

80

85

90

95

100

0

4

8

12

162024

2832

3640

Total Output Power (W)

35 Vin

48 Vin

75 Vin

Figure 1: Efficiency vs. output power, from 0 load to full load with 50%

load on 3.3V output and 50% load on 5.0V output at minimum, nominal,

0

1

2

3

4

5

0

4

8

12

16

20

24

28

32

36

40

Total Output Power (W)

35 Vin

48 Vin

75 Vin

Figure 2: Power dissipation vs. output power, from 0 load to full load

with 50% load on 3.3V output and 50% load on 5.0V output at mini-

65

70

75

80

85

90

95

100

7.3/0

5.8/1

4.4/1.9

2.9/2.9

1.5/3.9

0/4.8

Load Current (A), 3.3Vout/5.0Vout

35 Vin

48 Vin

75 Vin

Figure 3: Efficiency vs. load current, with total output power fixed at

100% load (40W) and load currents split as shown between 3.3V and

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

7.3/0

5.8/1

4.4/1.9

2.9/2.9

1.5/3.9

0/4.8

Load Current (A), 3.3Vout/5.0Vout

35 Vin

48 Vin

75 Vin

Figure 4: Power dissipation vs. load current, with total output power

fixed at 100% load (40W) and load currents split as shown between 3.3V

Figure 5: Efficiency at 100% load and 50/50 voltage split (6.1A load on

3.3V and 4A load on 5.0V) versus airflow rate for ambient air tempera-

Figure 6: Power dissipation at 100% load and 50/50 voltage split (6.1A

load on 3.3V and 4A load on 5.0V) versus airflow rate for ambient air

87

88

89

90

91

92

93

0

100

200

300

400

500

Air Flow (LFM)

25 C

40 C

55 C

0

1

2

3

4

5

0

100

200

300

400

500

Air Flow (LFM)

25 C

40 C

55 C